NVRA-S

N-VRA Statistics

Last Revision : November 9th, 2017.

1. 2nd Norm

Raw Score IQ (sd15) Rarity (1/x) Raw Score IQ (sd15) Rarity (1/x)
16 <=130  44 27 156  10,581
17 131 52 28 160 31,560
18 132 61 29 162 55,906
19 133 72 30 165 136,074
20 135 102 31 167 251,515
21 136 122 32 170 652,598
22 138 177 33 173 1,759,937
23 141 319 34 176 4,931,877
24 146 924 35 180 20,696,863
25 150  2,330 36 185 136,975,305
26 153 4,873 37 >=190  1,009,976,678

2. Histogram
nvra2ndhistogram
3. Statistical Properties & Correlations with other tests
Calculated mean on reported scores on standard supervised tests is 136.5 sd15 (N=12). Mean raw score of this sample on N-VRA is 22.67.

Parameter Value Test Score Pairs (n) r
Mean 22.62 Standard* 12 0.879
Median 23  WAIS  6 0.972
Stand. Deviation 4.035 RAPM 4 0.826
Variance 16.279 Jouve**  15 0.839
SEM 0.608 JCTI 7 0.860
Kurtosis 0.187  –
Skewness -0.109
Cronbach’s a 0.902  –

* Tests used : WAIS, RAPM, FRT-B, Cattell IIIB.
** Tests used : JCTI, CSE, TLAP-R, C-09, JCCES, C-10.

4. Notes
To sum up, NVRA shows excellent correlation with standard supervised IQ tests (r=0.879) and reliability (Cronbach’s alpha=0.902), a fact that makes it a reliable tool for estimating one’s intelligence quotient. Due to its mixed nature, it seems to retain its ability to measure until rather high levels, without being unbalanced or weird as a test. Next norm (3rd) will be generated after a total of 75 submissions.

Advertisements